Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Neutral poly (3,4-ethylenedioxythiophene-2,5-diyl)s: preparation by organometallic polycondensation and their unique p-doping behavior
Autore:
Yamamoto, T; Shiraishi, K; Abla, M; Yamaguchi, I; Groenendaal, L;
Indirizzi:
Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan Tokyo Inst Technol Yokohama Kanagawa Japan 2268503 anagawa 2268503, Japan Bayer AG, Cent Res Funct Mat Res, D-47829 Krefeld, Germany Bayer AG Krefeld Germany D-47829 Funct Mat Res, D-47829 Krefeld, Germany
Titolo Testata:
POLYMER
fascicolo: 3, volume: 43, anno: 2002,
pagine: 711 - 719
SICI:
0032-3861(200202)43:3<711:NP(PBO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
CONDUCTING POLYMERS; TECHNICAL APPLICATIONS; CONJUGATED POLYMERS; OPTICAL-PROPERTIES; SPECTROSCOPIC DATA; POLY(3,4-ETHYLENEDIOXYTHIOPHENE); POLYTHIOPHENES; DERIVATIVES; MONOMERS; POLY(3-ALKYLTHIOPHENE-2,5-DIYL)S;
Keywords:
poly(3,4-ethylenedioxythiophene) and hexyl derivative; optical and electronic properties; p-doping behavior;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
52
Recensione:
Indirizzi per estratti:
Indirizzo: Yamamoto, T Tokyo Inst Technol, Chem Resources Lab, Midori Ku, 4259 Nagatsuta, Yokohama, Kanagawa 2268503, Japan Tokyo Inst Technol 4259 Nagatsuta Yokohama Kanagawa Japan 2268503
Citazione:
T. Yamamoto et al., "Neutral poly (3,4-ethylenedioxythiophene-2,5-diyl)s: preparation by organometallic polycondensation and their unique p-doping behavior", POLYMER, 43(3), 2002, pp. 711-719

Abstract

Neutral and non-doped poly (3,4-ethylenedioxythiophene), PEDOTh(Ni), and its hexyl derivative, PEDOTh-C-6(Ni), have been prepared by organometallic dehalogenation polycondensation of 2,5-dichloro-3,4-ethylenedioxythiophene and its hexyl derivative with a zerovalent nickel complex. PEDOTh-C-6(Ni) was soluble in organic solvents and H-1 NMR data indicated that it had an M-nof 11,000. MALDI-TOF mass analysis of PEDOTh(Ni) gave M-n and M-w of about1700 and 2400, respectively. PEDOTh-C-6(Ni) showed a UV-Vis absorption peak at 546 mn in CHCl3. Electrochemical oxidation of PEDOTh-C-6(Ni) started at about -0.40 V vs Ag+/Ag and gave a peak at 0.20 V vs Ag+/Ag. Chemical andelectrochemical oxidation (or p-doping) of PEDOTh-C-6(Ni), both in solutions and in a solid state, led to weakening of the original pi-pi* peaks and rise of new peak(s) in a region of 800-1500 nm. The p-doping of PEDOTh-C-6(Ni) caused not only a decrease in the intensity of H-1 NMR signals of the bridging ethylene hydrogens but also a decrease in that of the hexyl side chain, suggesting a strong interaction of the p-dopant with the side chain. NMR data of poly(3-methoxythiophene-2,5-diyl) also supported an assumption that p-doping brings about a severe change in electronic state of the substituent attached to the polythiophene main chain. PEDOTh(Ni) had a density of1.71 the molecular packing mode of PEDOTh(Ni) is discussed based on the density of the polymer and its XRD data. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 12:41:06